Doffer for ironing machines



April 12, 1927. 1,624,698

R. J. WATTS DOF'FER FOR IRONINQ MACHINES Filed Oct. 27, 926

Pasta Apr. 12, 1927.

PATENT- OFFICE.

ROBERT J. WATTS, F BENTON HARBOR, MICHIGAN. I

norrna FOB. mounts MACHINES.

Application filed October 27, 1926. Serial No. 144,458.

which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings,'in which- Figure 1 is a view of a fragment of an ironing machine, illustrating my improved dofi'er applied thereto.

Figure 2 is a to view of that part of the machine illustrate in Figure 1.

Figure 3 is a top view of a portion of the doflfer mechanism.

Figure 4 is a view in section on aplane denoted by the dotted line 44 of Figure 3.

In the accompanying drawings the numeral 5 indicates a portion ofthe end of the 26 frame of an ironing machine to which my improved dofling attachment is alfixed and 6 indicates the cylinder in contact with which the articles to be ironed are passed, this cylinder being heated in a manner common to machines of this class. The cylinder rotates in the direction indicated by the arrow in Figure 1 and the articles are carried between said drum and an endless a roll 7 passing at one end around a roll 8 an being supported at various points throughout its length by other rolls or similar devices positioned to maintain the apron in contact with the drum throughout a considerable portion of the circumference of the latter,

and in a manner common to machines of this class, At a 'point adjacent to the roll 8 where the apron 7 leaves the drum, and between such roll and the point where the articles being ironed ass in between the drum 4:; and apron 7 my improved dofling attachment is located.

This attachment comprises a bar 9 extending across the machine between the two ends thereof and secured to its upper edges, this bar supportin the several members of the attachment, al of which are of the same construction and for which reason the description herein will be confined to a single member. Such member is composed of a base plate 10 having a dove-tail shaped projecporting rolls 21 rotatably mounted in roll tion 11 fitted in a dove-tail shaped groove 12 extending lengthwise of the bar 9, and said member also includes a knuckle 13 that serves as a pivotal support for the rest of the attachment. This embodies a knife support 14 having ears 15 to receive a pintle extending through said ears and the knuckle 13. An opening 16 is made in the support and the shank 17 of a dofling knife 18 extends into said hole. 65

Said shank extends from the back edge. of the knife at substantially its lengthwise center and through a hole extending from the edge of the support 14 into the opening 16 and is pivotally mounted therein.

A series of tapes 19 pass through cut away portions 20 in the adjacent edges of the supports 14, said tapes passing about the edges of the notches 20 and about tape supsupports 22 secured to and rising from the ends 5.

The knife supports are of such weight as to maintain the knives 18 in contact with the cylinder 6 by the action of gravity, and these supports are'so located with respect to the cylinder 6 and roll 8 that an upward pull is exerted by the tapes 19, and this pull on the knife counteracts the action of gravity merely to such extent as to maintain a suflicient pressure of the knifes 18 against the cylinder to effect the desired results. The knives 18 are freely movable on their pivots to readily accommodate themselves to any irregularity in the drum or cylinder, and the knife supports 14 are also I freely movable to accommodate themselves to varying conditions in the operation ofthe machine, thus providing for efficiency. The structures are such as to enable them to be readily and comparatively inexpensively made and also to be readily attached to or removed from the machine.

In accordance with the provisions of the patent statutes I have described the prin- 100 ciples of operationof my invention, together with the device which I now consider to represent the best embodiment thereof; but I I desire to have it understood that the device shown is only illustrative and that .the in- J vention may be carried out by other means and applied to uses other than those above set out. e

I claim- 1. A dofi'er including a pivotally mounted no knife support, with ahole extending inward from the edge thereof, and a dofling knife located at the edge of said support and having a shank extending into said hole and freely pivotall movable therein.

2. A dofl'er 'inclu ing a pivotally mounted knife support having an openlng .therethrough and a hole extending from its edge intosaid opening, and adofling knife located shank projecting throng opening, and freely "pivotally movable at the edge of said suplportd indhazinga sm 0 e in o sa1 therein.

.'3. A doifer including a base plate, a dovetail shaped projection thereon to fit a groove of similar shape in a dofier support, a doffing knife support pivotally attached to secured in said groove, and doifing knives freely pivotally attached to said supports. 5. An ironing machine includin a frame, a supporting bar secured to said rame and having a dovetail shaped groove extending lengthwise therein, a series of dofling knife supports having pro'ections removably fitting" said grooves, an a dofling knife pivotally sustained by each of said supports.

ROBERT J. WATTS. 

